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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified | Total | Common Stock [Member] | Additional Paid-in Capital [Member] | Accumulated Other Comprehensive Loss [Member] | Retained Earnings [Member] | Parent [Member] | Noncontrolling Interest [Member]
--- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2008 | $ 442,228 | $ 32 | $ 218,527 | $ (4,508) | $ 13,671 | $ 227,722 | $ 214,506
Balance (in Shares) at Dec. 31, 2008 |  | 32,357,000 |  |  |  |  |
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership |  |  | 90 |  |  | 90 | (90)
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership (in Shares) |  | 16,000 |  |  |  |  |
Issuance of Common Shares, net of issuance costs | 65,222 | 6 | 65,216 |  |  | 65,222 |
Issuance of Common Shares, net of issuance costs (in Shares) |  | 5,750,000 |  |  |  |  |
Issuance of Common Shares through special dividend | 16,192 | 2 | 16,190 |  |  | 16,192 |
Issuance of Common Shares through special dividend (in shares) |  | 1,287,000 |  |  |  |  |
Vesting of employee Restricted Share and LTIP awards | 3,847 |  | 2,957 |  |  | 2,957 | 890
Vesting of employee Restricted Share and LTIP awards (in Shares) |  | 253,000 |  |  |  |  |
Dividends declared | (29,474) |  |  |  | (28,679) | (28,679) | (795)
Exercise of options | 1,556 |  | 1,556 |  |  | 1,556 |
Exercise of options (in Shares) |  | 259,000 |  |  |  |  |
Common Shares issued under Employee Share Purchase Plan | 106 |  | 106 |  |  | 106 |
Common Shares issued under Employee Share Purchase Plan (in Shares) |  | 8,744 |  |  |  |  |
Issuance of Common Shares to trustees | 635 |  | 635 |  |  | 635 |
Issuance of Common Shares to trustees (in Shares) |  | 25,000 |  |  |  |  |
Employee Restricted Shares cancelled | (5,423) |  | (5,423) |  |  | (5,423) |
Employee Restricted Shares cancelled (in Shares) |  | (359,000) |  |  |  |  |
Deferred shares converted to Common Shares (in Shares) |  | 190,000 |  |  |  |  |
Conversion options on Convertible Notes purchased (Note 9) | (840) |  | (840) |  |  | (840) |
Noncontrolling interest distributions | (1,624) |  |  |  |  |  | (1,624)
Noncontrolling Interest contributions | 25,653 |  |  |  |  |  | 25,653
Balance before adjustment toward comprehensive income | 518,078 | 40 | 299,014 | (4,508) | (15,008) | 279,538 | 238,540
Balance before adjustment toward comprehensive income (in Shares) |  | 39,787,000 |  |  |  |  |
Comprehensive income (loss): |  |  |  |  |  |  |
Net income | 12,706 |  |  |  | 31,133 | 31,133 | (18,427)
Unrealized loss on valuation of swap agreements | (1,052) |  |  | (912) | 0 | (912) | (140)
Reclassification of realized interest on swap agreements | 2,745 |  |  | 2,426 | 0 | 2,426 | 319
Total comprehensive income (loss) | 14,399 |  |  | 1,514 | 31,133 | 32,647 | (18,248)
Balance at Dec. 31, 2009 | 532,477 | 40 | 299,014 | (2,994) | 16,125 | 312,185 | 220,292
Balance (in Shares) at Dec. 31, 2009 |  | 39,787,000 |  |  |  |  |
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership |  |  | 3,240 |  |  | 3,240 | (3,240)
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership (in Shares) |  | 365,000 |  |  |  |  |
Vesting of employee Restricted Share and LTIP awards | 3,838 |  | 2,060 |  |  | 2,060 | 1,778
Vesting of employee Restricted Share and LTIP awards (in Shares) |  | 133,000 |  |  |  |  |
Dividends declared | (29,699) |  |  |  | (28,976) | (28,976) | (723)
Exercise of options | 109 |  | 109 |  |  | 109 |
Exercise of options (in Shares) |  | 7,000 |  |  |  |  |
Common Shares issued under Employee Share Purchase Plan | 100 |  | 100 |  |  | 100 |
Common Shares issued under Employee Share Purchase Plan (in Shares) |  | 6,184 |  |  |  |  |
Issuance of Common Shares to trustees | 266 |  | 266 |  |  | 266 |
Issuance of Common Shares to trustees (in Shares) |  | 13,000 |  |  |  |  |
Employee Restricted Shares cancelled | (966) |  | (966) |  |  | (966) |
Employee Restricted Shares cancelled (in Shares) |  | (57,000) |  |  |  |  |
Noncontrolling interest distributions | (2,892) |  |  |  |  |  | (2,892)
Noncontrolling Interest contributions | 33,556 |  |  |  |  |  | 33,556
Balance before adjustment toward comprehensive income | 536,789 | 40 | 303,823 | (2,994) | (12,851) | 288,018 | 248,771
Balance before adjustment toward comprehensive income (in Shares) |  | 40,254,000 |  |  |  |  |
Comprehensive income (loss): |  |  |  |  |  |  |
Net income | 50,667 |  |  |  | 30,057 | 30,057 | 20,610
Unrealized loss on valuation of swap agreements | (2,683) |  |  | (2,329) |  | (2,329) | (354)
Reclassification of realized interest on swap agreements | 2,749 |  |  | 2,466 |  | 2,466 | 283
Total comprehensive income (loss) | 50,733 |  |  | 137 | 30,057 | 30,194 | 20,539
Balance at Dec. 31, 2010 | 587,522 | 40 | 303,823 | (2,857) | 17,206 | 318,212 | 269,310
Balance (in Shares) at Dec. 31, 2010 | 40,254,525 | 40,254,000 |  |  |  |  |
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership |  |  | 56 |  |  | 56 | (56)
Conversion of OP Units to Common Shares by limited partners of the Operating Partnership (in Shares) |  | 11,000 |  |  |  |  |
Issuance of Common Shares, net of issuance costs | 44,660 | 2 | 44,658 |  |  | 44,660 |
Issuance of Common Shares, net of issuance costs (in Shares) |  | 2,250,000 |  |  |  |  |
Vesting of employee Restricted Share and LTIP awards | 4,032 | 1 | 481 |  |  | 482 | 3,550
Vesting of employee Restricted Share and LTIP awards (in Shares) |  | 96,000 |  |  |  |  |
Dividends declared | (30,428) |  |  |  | (29,444) | (29,444) | (984)
Exercise of options | 16 |  | 16 |  |  | 16 |
Exercise of options (in Shares) |  | 2,000 |  |  |  |  |
Common Shares issued under Employee Share Purchase Plan | 93 |  | 93 |  |  | 93 |
Common Shares issued under Employee Share Purchase Plan (in Shares) |  | 4,886 |  |  |  |  |
Issuance of LTIP Unit awards to employees | 2,441 |  |  |  |  |  | 2,441
Issuance of Common Shares to trustees | 264 |  | 264 |  |  | 264 |
Issuance of Common Shares to trustees (in Shares) |  | 8,000 |  |  |  |  |
Employee Restricted Shares cancelled | (724) |  | (724) |  |  | (724) |
Employee Restricted Shares cancelled (in Shares) |  | (40,000) |  |  |  |  |
Noncontrolling interest distributions | (7,697) |  |  |  |  |  | (7,697)
Noncontrolling Interest contributions | 117,945 |  |  |  |  |  | 117,945
Balance before adjustment toward comprehensive income | 718,124 | 43 | 348,667 | (2,857) | (12,238) | 333,615 | 384,509
Balance before adjustment toward comprehensive income (in Shares) |  | 42,586,000 |  |  |  |  |
Comprehensive income (loss): |  |  |  |  |  |  |
Net income | 53,715 |  |  |  | 51,555 | 51,555 | 2,160
Unrealized loss on valuation of swap agreements | (5,611) |  |  | (3,461) |  | (3,461) | (2,150)
Reclassification of realized interest on swap agreements | 3,081 |  |  | 2,405 |  | 2,405 | 676
Total comprehensive income (loss) | 51,185 |  |  | (1,056) | 51,555 | 50,499 | 686
Balance at Dec. 31, 2011 | $ 769,309 | $ 43 | $ 348,667 | $ (3,913) | $ 39,317 | $ 384,114 | $ 385,195
Balance (in Shares) at Dec. 31, 2011 | 42,586,376 | 42,586,000 |  |  |  |  |

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